Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a preparation and construction method of a composite alkali-activated slag water-stable recycled aggregate mixture, which is characterized in that sodium hydroxide and sodium silicate are used as a composite alkali activator, and an alkali-activated slag cement-stable recycled concrete aggregate mixture is prepared from recycled aggregate. The mass ratio of the recycled aggregate to the cement to the slag to the fly ash to the water to the sodium hydroxide to the sodium silicate is 100 to (2.8 to 3.15) to (1.2 to 1.35) to (0.36 to 0.405) to (8.7 to 8.9) to (0.072 to 0.081) to (0.048 to 0.054). All the components are weighed according to the mass ratio and then are uniformly stirred to obtain the alkali-activated slag cement stabilized recycled aggregate mixture, and the alkali-activated slag cement stabilized recycled aggregate mixture is constructed by adopting a layered paving and compacting one-time forming method. According to the invention, waste concrete, industrial by-product slag and fly ash are recycled, alkali is added to prepare the water-stable material with strength meeting the specification requirement, the compaction degree of a water-stable layer is improved by adopting a layered paving and compacting one-time forming construction method, and the interlayer adhesion is ensured by spraying cement paste between layers, so that the segregation condition of the mixture is reduced, and the construction efficiency is improved. And the paving efficiency and quality are improved.
本发明公开了一种复合碱激发矿渣水稳再生骨料混合料制备和施工方法，使用氢氧化钠和硅酸钠做复合碱激发剂激，以再生骨料制备碱激发矿渣水泥稳定再生混凝土骨料混合料，各组分按质量比为：再生骨料、水泥、矿渣、粉煤灰、水、氢氧化钠和硅酸钠的质量比为：100:2.8～3.15:1.2～1.35:0.36～0.405:8.7～8.9:0.072～0.081:0.048～0.054。本发明所述各组分按照质量比称取后，经搅拌均匀得到碱激发矿渣水泥稳定再生骨料混合料，采用分层摊铺压实一次成型的方法施工。本发明回收利用废旧混凝土、工业副产品矿渣和粉煤灰，加入碱制备强度满足规范要求的水稳料，采用分层摊铺压实一次成型的施工方法提高水稳层压实度，层间喷洒水泥浆保证层间粘结，不仅减轻混合料的离析情况，而且提高摊铺效率和质量。
The invention discloses a preparation and construction method of a composite alkali-activated slag water-stable recycled aggregate mixture, which is characterized in that sodium hydroxide and sodium silicate are used as a composite alkali activator, and an alkali-activated slag cement-stable recycled concrete aggregate mixture is prepared from recycled aggregate. The mass ratio of the recycled aggregate to the cement to the slag to the fly ash to the water to the sodium hydroxide to the sodium silicate is 100 to (2.8 to 3.15) to (1.2 to 1.35) to (0.36 to 0.405) to (8.7 to 8.9) to (0.072 to 0.081) to (0.048 to 0.054). All the components are weighed according to the mass ratio and then are uniformly stirred to obtain the alkali-activated slag cement stabilized recycled aggregate mixture, and the alkali-activated slag cement stabilized recycled aggregate mixture is constructed by adopting a layered paving and compacting one-time forming method. According to the invention, waste concrete, industrial by-product slag and fly ash are recycled, alkali is added to prepare the water-stable material with strength meeting the specification requirement, the compaction degree of a water-stable layer is improved by adopting a layered paving and compacting one-time forming construction method, and the interlayer adhesion is ensured by spraying cement paste between layers, so that the segregation condition of the mixture is reduced, and the construction efficiency is improved. And the paving efficiency and quality are improved.
本发明公开了一种复合碱激发矿渣水稳再生骨料混合料制备和施工方法，使用氢氧化钠和硅酸钠做复合碱激发剂激，以再生骨料制备碱激发矿渣水泥稳定再生混凝土骨料混合料，各组分按质量比为：再生骨料、水泥、矿渣、粉煤灰、水、氢氧化钠和硅酸钠的质量比为：100:2.8～3.15:1.2～1.35:0.36～0.405:8.7～8.9:0.072～0.081:0.048～0.054。本发明所述各组分按照质量比称取后，经搅拌均匀得到碱激发矿渣水泥稳定再生骨料混合料，采用分层摊铺压实一次成型的方法施工。本发明回收利用废旧混凝土、工业副产品矿渣和粉煤灰，加入碱制备强度满足规范要求的水稳料，采用分层摊铺压实一次成型的施工方法提高水稳层压实度，层间喷洒水泥浆保证层间粘结，不仅减轻混合料的离析情况，而且提高摊铺效率和质量。
Preparation and construction method of composite alkali-activated slag water-stable recycled aggregate mixture
一种复合碱激发矿渣水稳再生骨料混合料制备和施工方法
25.03.2022
Patent
Elektronische Ressource
Chinesisch
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